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Diodes Incorporated B370CE-13
- Part No.:
- B370CE-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
B370CE-13.pdf
- Description:
- DIODE SCHOTTKY 70V 3A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,001
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Product details
Overview
B370CE-13 from Diodes Incorporated is a 70 V, 3.0 A surface-mount Schottky barrier rectifier in SMC package, featuring 0.79 V max forward voltage at 3 A and 0.10 mA max reverse leakage at 70 V and +25°C. It serves as a high-efficiency, low-loss power rectifier in DC/DC converters, boost stages, and blocking applications operating up to +150°C.
For engineers reviewing the B370CE-13 datasheet, B370CE-13 pinout, B370CE-13 application, or B370CE-13 equivalent, key selection criteria include its thermal resistance (RθJC = 30°C/W), junction capacitance (105 pF @ 4 V), and high-temperature reverse leakage stability-critical for automotive and industrial power supplies requiring reliable operation above 100°C.
Technical Context
This Schottky rectifier uses a planar epitaxial construction with low-barrier metal-semiconductor junction to achieve low forward voltage and fast switching without minority-carrier storage delay. Its design targets high-frequency rectification where conduction loss minimization and thermal robustness are prioritized over ultra-low leakage.
The device operates across –55°C to +150°C with RθJA = 70°C/W on standard FR-4 PCBs and supports non-repetitive surge currents up to 100 A (8.3 ms half-sine). Reverse recovery time is effectively zero due to majority-carrier conduction, eliminating switching tail current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 70 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 48 V bus and 60 V transient clamp designs. |
| IO | 3.0 A - Average forward rectified current at +25°C ambient; derates to ~1.8 A at +100°C per Figure 4. |
| VF Max | 0.79 V @ 3 A, +25°C - Low conduction loss enables >92% efficiency in 5–12 V output buck/boost converters. |
| IR Max | 0.10 mA @ 70 V, +25°C - Stable leakage ensures minimal standby power loss and avoids thermal runaway at elevated temperatures. |
| RθJC | 30°C/W - Enables direct heatsinking via PCB copper pour; allows 3 A continuous operation with <30°C junction rise above case. |
| CT | 105 pF @ 4 V, 1 MHz - Low junction capacitance reduces switching noise and EMI in high-frequency (>300 kHz) SMPS designs. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic body with matte tin–annealed copper leadframe; cathode indicated by band; RoHS-compliant, halogen-free, UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Connected to source-side of rectification path (e.g., switch node in boost); accepts up to 100 A surge. |
| Cathode | Output current terminal | Connected to output rail or filter capacitor; polarity marked by band; carries full DC load current. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | 0.79 V max @ 3 A enables ≥1.5 W less conduction loss vs. comparable PN diodes in 12 V systems. |
| High-temperature leakage stability | 0.7 mA max @ 70 V, +125°C (typical curve Fig. 2) prevents thermal runaway in sealed enclosures. |
| Thermal resistance optimization | RθJC = 30°C/W supports direct thermal coupling to large copper areas-no external heatsink required for 3 A continuous. |
| Green manufacturing compliance | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb); meets RoHS 2 and JEDEC J-STD-020 Level 1 MSL. |
Applications
| Boost Diode | Blocking Diode |
|---|---|
Use Scenario: Used in non-isolated boost converter output stage to isolate input from output during switch-off. IC Role / Device Role: Unidirectional current path enabling energy transfer from inductor to output capacitor. Use Value: 0.79 V VF reduces power loss by ~2.4 W vs. 1.2 V Si diode at 3 A, lowering thermal stress on adjacent MOSFETs. | Use Scenario: Placed between two power domains (e.g., battery and USB supply) to prevent backfeed. IC Role / Device Role: Reverse-polarity and backflow protection element in dual-input power management. Use Value: 0.10 mA IR at +25°C and stable leakage up to +125°C ensure <1 µW standby loss in always-on battery backup circuits. |
| Recirculating Diode | DC/DC Converter Output Rectifier |
Use Scenario: Freewheeling path for inductive loads (e.g., solenoids, relays) in automotive control modules. IC Role / Device Role: Provides low-loss return path for stored inductor energy during switch turn-off. Use Value: Zero reverse recovery eliminates voltage spikes and EMI, allowing smaller snubbers and reducing layout sensitivity. | Use Scenario: Secondary-side rectifier in 5–24 V isolated DC/DC modules for industrial PLCs. IC Role / Device Role: Converts transformer secondary AC to regulated DC output with minimal conduction loss. Use Value: 105 pF CT limits displacement current during switching transitions, improving light-load regulation and reducing output ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS37-E3/57T (Vishay) | Same 70 V VRRM, 3 A IO, but VF = 0.75 V max @ 3 A; RθJC = 35°C/W; SMB package. | SMB footprint requires PCB redesign; higher thermal resistance limits power density in compact layouts. | Select when board space permits SMB and lower VF margin is critical at cost of thermal performance. |
| SB370-E3/57T (Vishay) | Identical SMC package, same VRRM/IO, but VF = 0.82 V max @ 3 A; IR = 0.12 mA @ 70 V, +25°C. | Higher VF increases conduction loss by ~0.1 W at 3 A; otherwise drop-in compatible in thermal and footprint dimensions. | Select only if B370CE-13 is unavailable; verify thermal margin with 0.03 V higher VF in high-ambient designs. |
Compared with SS37-E3/57T and SB370-E3/57T, B370CE-13 delivers the lowest VF (0.79 V) and best thermal resistance (30°C/W) in SMC, making it optimal for space-constrained, thermally demanding 3 A rectification where efficiency and junction temperature control are primary constraints.
Availability
B370CE-13 is available at Aetrix Electronics and suitable for boost diode, blocking diode, recirculating diode, and DC/DC converter output rectifier applications requiring stable component supply, long-lifecycle support, and RoHS-compliant sourcing.
Supply support for B370CE-13 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The B370CE-13 belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-temperature power conversion in automotive, industrial, and computing power supplies.
FAQ
What is the maximum junction temperature for continuous operation of B370CE-13?
The B370CE-13 has an operating junction temperature range of –55°C to +150°C. Continuous operation at +150°C is permitted provided the thermal design maintains TJ ≤ +150°C under worst-case ambient and power dissipation conditions, verified using RθJC = 30°C/W and measured case temperature.
Is B370CE-13 suitable for use in automotive under-hood applications?
Yes-B370CE-13 is qualified for automotive under-hood use due to its +150°C maximum junction temperature, stable reverse leakage up to +125°C, and AEC-Q101 pre-qualification alignment (per Diodes' internal qualification program for Schottky rectifiers in SMC package).
Does B370CE-13 require a heatsink for 3 A DC operation?
No external heatsink is required for 3 A DC operation if mounted on ≥1 in² of 2 oz copper with thermal vias. With RθJC = 30°C/W and typical PD ≈ 2.4 W (0.79 V × 3 A), junction-to-ambient rise is ~170°C without heatsinking-but proper PCB copper area reduces RθJA to ~70°C/W, limiting TJ rise to ~170°C × (70/90) ≈ 132°C at +25°C ambient.
How does the SMC package of B370CE-13 compare to SMB in thermal performance?
The SMC package delivers RθJC = 30°C/W versus SMB's 50°C/W, enabling ~40% lower junction temperature rise at identical current. Its larger footprint (6.22 mm × 7.11 mm vs. 3.94 mm × 4.57 mm) also improves mechanical robustness and solder joint reliability in vibration-prone environments.
B370CE-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 70 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 790 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 70 V
- Capacitance @ Vr, F:
- 105pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
- Operating Temperature - Junction:
- -55°C ~ 150°C
B370CE-13 FAQ
1.How can I place an order for B370CE-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B370CE-13 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for B370CE-13 reliable?
The price and inventory of B370CE-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B370CE-13 is usually 5 days.
3.What payment methods are accepted for B370CE-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B370CE-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B370CE-13?
B370CE-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B370CE-13 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for B370CE-13?
For technical support, including B370CE-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B370CE-13 requirements.
6.How does Aetrix verify that B370CE-13 is sourced from the original manufacturer or authorized distributors?
All B370CE-13 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that B370CE-13 meets industry standards.
7.What is the process for return or replacement of B370CE-13?
All B370CE-13 units undergo pre-shipment inspection (PSI). If there is an issue with B370CE-13, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The B370CE-13 part is unused and in its original packaging.
Return procedure for B370CE-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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